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Mica glass is derived from isinglass, a natural silicate mineral that can be used in older antique woods stoves, European stoves, coal stoves, furnaces, and even the boiler peepholes. It is a thin and transparent, having the appearance of cellophane or clear plastic. However, mica glass sheets can withstand temperatures of 1800° F degrees, making it ideal for smaller windows on heating appliances.

Our mica glass panels comes in thicknesses of .003 inch to .005 inch. Individual sheets are offered only in the variety of sizes shown here. It is more economical to get several smaller panels and piece them together for larger window openings rather than trying to obtain a custom size. If you need smaller dimensions than what we offer, mica can easy be cut to size with scissors. 

Please Note: These are the only sizes available; if you need to cover a larger area, you will need to piece multiple mica glass panels together.

What is isinglass?

Isinglass is a thin, transparent sheet of mica which is a silicate mineral. Because this material is highly resistant to extreme temperatures and less likely to shatter under these conditions, it is perfect for use in small windows on furnaces, heating stoves, and peepholes in boilers. Care and maintenance is easy:

  • Gently rinse off the isinglass window with clean water. 
  • Dilute approximately 1 pint of water with 3 drops of mild non detergent soap.
  • Wash the isinglass with a soft cloth and soapy water solution.
  • Rinse thoroughly with fresh, clean water and another clean soft cloth.
  • Dry the window with a third clean absorbent cloth or towel.

California Proposition 65California Residents: Click here for more information on Proposition 65.